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CHIANTI - an atomic database for emission lines. VII. New Data for X-rays and other improvements

Landi, E.; Del Zanna, G.; Young, P.R.; Dere, K.P.; Mason, H.E.; Landini, M.; (2006) CHIANTI - an atomic database for emission lines. VII. New Data for X-rays and other improvements. The Astrophysical Journal Supplement Series , 162 (1) pp. 261-280. 10.1086/498148. Green open access

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Abstract

The CHIANTI atomic database contains atomic energy levels, wavelengths, radiative transition probabilities, and collisional excitation data for a large number of ions of astrophysical interest. CHIANTI also includes a suite of IDL routines to calculate synthetic spectra and carry out plasma diagnostics. Version 5 has been released, which includes several new features, as well as new data for many ions. The new features in CHIANTI are as follows: the inclusion of ionization and recombination rates to individual excited levels as a means to populate atomic levels; data for Kα and Kβ emission from Fe ii to Fe xxiv; new data for high-energy configurations in Fe xvii to Fe xxiii; and a complete reassessment of level energies and line identifications in the X-ray range, multitemperature particle distributions, and photoexcitation from any user-defined radiation field. New data for ions already in the database, as well as data for ions not present in earlier versions of the database, are also included. Version 5 of CHIANTI represents a major improvement in the calculation of line emissivities and synthetic spectra in the X-ray range and expands and improves theoretical spectra calculations in all other wavelength ranges.

Type: Article
Title: CHIANTI - an atomic database for emission lines. VII. New Data for X-rays and other improvements
Open access status: An open access version is available from UCL Discovery
DOI: 10.1086/498148
Publisher version: http://dx.doi.org/10.1086/498148
Language: English
Additional information: Published by the University of Chicago Press
UCL classification: UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Space and Climate Physics
URI: https://discovery.ucl.ac.uk/id/eprint/9521
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